Traditional Chinese Medicine applies the philosophies of Yin Yang to treat disease. When the body is in balance between Yin and Yang, health is predominant; when Yin and Yang are imbalanced, disease occurs.
Pain is also relatively easy to quantify, and progress can be measured fairly simply. For these reasons, physicians trained in Medical Acupuncture treat musculo-skeletal pain conditions as one of their early applications of their newly developed skills.